crot.f (3)  Linux Man Pages
NAME
crot.f 
SYNOPSIS
Functions/Subroutines
subroutine crot (N, CX, INCX, CY, INCY, C, S)
CROT applies a plane rotation with real cosine and complex sine to a pair of complex vectors.
Function/Subroutine Documentation
subroutine crot (integerN, complex, dimension( * )CX, integerINCX, complex, dimension( * )CY, integerINCY, realC, complexS)
CROT applies a plane rotation with real cosine and complex sine to a pair of complex vectors.
Purpose:

CROT applies a plane rotation, where the cos (C) is real and the sin (S) is complex, and the vectors CX and CY are complex.
Parameters:

N
N is INTEGER The number of elements in the vectors CX and CY.
CXCX is COMPLEX array, dimension (N) On input, the vector X. On output, CX is overwritten with C*X + S*Y.
INCXINCX is INTEGER The increment between successive values of CY. INCX <> 0.
CYCY is COMPLEX array, dimension (N) On input, the vector Y. On output, CY is overwritten with CONJG(S)*X + C*Y.
INCYINCY is INTEGER The increment between successive values of CY. INCX <> 0.
CC is REAL
SS is COMPLEX C and S define a rotation [ C S ] [ conjg(S) C ] where C*C + S*CONJG(S) = 1.0.
Author:

Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
 September 2012
Definition at line 104 of file crot.f.
Author
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